Crossword Genius

Legally obliged to jump across (5,4)

Ross

I believe the answer is:

bound over

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'legally obliged' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'jump across' is the wordplay.
'jump' becomes 'bound' (synonyms).
'across' becomes 'over' (synonyms).
'bound'+'over'='BOUND OVER'

'to' is the link.

Can you help me to learn more?

(Other definitions for bound over that I've seen before include "subject to legal constraint" , "Put under a legal obligation" , "Placed under a (specified) legal obligation" , "Legally under restraint - jump across" , "Clear" .)

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